Power-transmission mechanism.



H. FUTTINGER.

POWER TRANSMISSION MECHANISM.

APPLIOATION FILED JULY 21, 1910. 1,024,982.

Patented Apr. 30, 1912 U M I 17 R 14 11 J3 1 A 16 j 7 lye/q l WIT [ME-Sm/mvrox? HWY/WU! [if/[Myer 6/ HERMANN FfiTTINGER, OF ZOPPOT, NEARDANZIG, GERMANY.

POWER-TRANSMISSION MECHANISM.

Speciflcation of Letters Patent.

Patented Apr. 30, 1912.

Application filed July 21, 1910. Serial No. 573,455.

To all whom it may concern Be it known that I, HERMANN Forrmonn, asubject of the German Emperor, residing at Zoppot, Germany, haveinvented new and useful Improvements in Power-Transmission Mechanism, ofwhich the following is a specification.

My invention relates to improvements in the hydraulic power transmissionmechanism with turbine-wheels as disclosed in my pending application forUnited States Letters Patent, Serial No. 327,395. The mechanismdescribed in the said application comprises one or more primary turbinesand one or more secondary turbines, located in immediate proximity, andso connected that the passages for the working-fluid of the primary andsecondary turbines form a closed system in the common casing. Thesecombined passages may be termed the working chamber of the system.

The blading of the mechanism can-especially in the case of two-stagesecondary Wheelsbe such that the first secondarywheel utilizes mainlythe velocity of the fluid, that is to say, works as action-wheel, whilethe second secondary-wheel is designed to utilize principally thepressure and is thus bladed as reaction-wheel. It

may be said that the primary turbine acts as a pump, and the secondaryturbine acts as a motor. Such constructions are already well lmown forcentrifugal-pumps, and are chiefly employed in cases in which it isdesired to obviate the formation of hollow spaces in the action-wheel athigh speeds. For power transmitting mechanism, on the other hand, thearrangement has not yet been adopted; nor is it always advisable toprovide such, though in the absence of the same all the spaces of thegiecglanism do not always remain filled with According to the presentinvention, in order to avoid losses on the occurrence ofnegative-pressures in the transmissionmechanism, and to avoid theformation of hollow-spaces, which result, I place the working-chamberunder pressure, which 1 find can be done without any disadvantage forthe mechanism. This can, for instance, be efl'ected by means of a pump,an elevated vessel, or in other suitable manner.

Depending upon the pressures in the mechanism produced by the elevatedvessel, pump or the like, there occurs a greater or less loss ofoperative-water, which escapes from the stuffing-boxes or through theinterstices within the mechanism itself. This escaping water, however,can be employed to advantage for regulating the general temperature ofthe mechanism, the interstices through which the water flows out beingfor,

this purpose made of such dimensions that such quantity of hot water canalways be replaced as is requisite to prevent a certain temperature inthe mechanism being exceeded. The pump employed for setting themechanism under pressure, can also be used for keeping the samecontinuously filled under pressure, and for supplying fresh or cooledleakage-water thereto.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures, and in which Figure 1 is a sideelevation showing somewhat diagrammatically the application of a pump toa power transmitting mechanism constructed as disclosed in myapplication above referred to, the transmitting mechanism being shownpartly in section; Fig. 2 is a view somewhat similar to Fig. 1, butshowing the application of an overhead tank instead of a pump; and Fig.3 is a similar view showing the use of both a pump and an overhead tankin the same system.

The power transmitting mechanism shown in the drawings is constructedsubstantially as illustrated in my copending application above referredto. This power transmitting mechanism includes a casing 10, having aseries of substantially radial passages 11 therethrough and juxtaposedto two rotary members or turbines 12 and 13, which have passages 14 and15 combining with the passages 11 to form a complete circuit for thefluid. .The turbine 13 may be connected to the drive shaft and theturbine 12 to the driven shaft. The liquid thrown out from thepassages'15 enters the passages 14 and causes the two turbines to traveltogether.

A conduit 16 leads to the casing, so that the amount of liquid withinthe passages may be increased or decreased at will. As shown in Fig. 1,a centrifugal pump 17 operates to deliver liquid to this conduit. InFig. 2, I have illustrated a similar transmitting mechanism with aconduit 16 and an overhead tank 17 connected thereto, so as to maintaina constant liquid pressure within the power transmitter. In Fig. 3, theconduit 16 and the pump 17 are similar to those illustrated in Fig. 1,and the overhead tank 17 delivers through a conduit 16 to the conduit 16in substantially the same manner as the corresponding parts do in theform shown in Fig. l.

lVhat I claim as new is 1. An apparatus for transmitting or transformingpower, having a turbine to transmit energy to afluid, and a turbinecapable of receiving power from an energized fluid, the two turbineshaving passages arranged with respect to each other in such a mannerthat they form a curved circuit in which said fluid circulates, wherebythe rotation of said second turbine is secured solely through themovement of the fluid, and means for maintaining said fluid underpressure in said passages by an extraneous source. 1

2. The combination with a casing con taining a confined volume. ofliquid, of a shaft rotatably mounted therein, a centrifugal pumpimpeller secured tosaid shaft, a turbine wheel located in said casing,said impeller being adapted to direct liquid to said turbine wheel,whereby the turbine is actuated solely by the movement of the liquid,and a pump communicating with said casing for the purpose of maintainingthe same under pressure and returning escaping working fluid thereto.

3. In combination, a casing, two members arranged in said casing, eachhaving radial passages, the outlets from the passages of one of saidmembers being constructed to direct a liquid against the other member,and extraneous means for maintaining the fluid in said casing underpressure.

4. An apparatus for transmitting or transforming power, having a turbineto transmit energy to a fluid, a turbine capable of receiving power fromthe energized fluid, means for controlling the flow of the fluid,whereby the second-mentioned turbine is rotated solely by the action ofthe fluid delivered from the first-mentioned turbine,

and means for maintaining said fluid under pressure by an extraneoussource.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERMANN FOTTINGER.

Witnesses:

- ALBERT GEHLICHT,

AUGUST WOLF.

